ASSESSMENT OF PROGRESS AND STATUS OF DATA ASSIMILATION IN NUMERICAL WEATHER PREDICTION

• Published in: Bulletin of the American Meteorological Society Vol. 99; no. 5; pp. ES75 - ES79
• Main Authors: Kwon, In-Hyuk, English, Stephen, Bell, William, Potthast, Roland, Collard, Andrew, Ruston, Benjamin
• Format: Journal Article
• Language: English
• Published: Boston American Meteorological Society 01.05.2018
• Subjects: Bias; Boundary conditions; Data assimilation; Data collection; Humidity; Laboratories; Localization; MEETING SUMMARIES; R&D; Research & development; Weather forecasting; Workshops; South Korea; United Kingdom > UK; France; United States > US
• ISSN: 0003-0007; 1520-0477
• DOI: 10.1175/BAMS-D-17-0266.1

INTERNATIONAL WORKSHOP ON REAL-TIME NWP FORECAST SYSTEM What: Representatives from major operational centers and research institutes, including ECMWF, the Met Office, Météo-France, DWD, KMA, CMA, JMA, ECCC, NOAA/NCEP, NOAA/ESRL, NRL, NASA, and NCAR, gathered to discuss recent developments in real-time numerical weather prediction systems, especially data assimilation. Andrew Collard [National Oceanic and Atmospheric Administration (NOAA)/National Centers for Environmental Prediction (NCEP)] presented recent changes in NCEP’s NWP data assimilation configuration, including the introduction of four-dimensional ensemble-variational DA (4DEnVar). The concept of the German Weather Service [Deutscher Wetterdienst (DWD)]’s NWP model is an integrated system, including a nowcasting ensemble prediction system (EPS), Rapid Update Cycle (RUC) DA, and short-range NWP (Roland Potthast, DWD), where boundary conditions are provided by DWD’s global Icosahedral Nonhydrostatic (ICON)-EPS model based on the hybrid LETKF plus EnVar DA. The data volumes being read and written, archived, and communicated between processors is now very high. [...]efficient and innovative methods for input/out (I/O) are needed, such as parallel and asynchronous I/O, and dedicated I/O servers, alongside efforts to improve the scalability of core systems.